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Coupling of in-situ Sm-Nd Systematics and U-Pb dating of monazite and allanite with applications to crustal evolution studies

McFarlane, Christopher; McCulloch, Malcolm

Description

Here we demonstrate the capabilities of LA-MC-ICPMS Sm-Nd-isotope measurements applied to two of the most common LREE-enriched minerals in the Earth's crust: monazite and allanite. We show that high precision measurements of143Nd/144Nd comparable to solution-based MC-ICPMS measurements (< 0.5 epsilon units) can be achieved for laser spot sizes ranging from 16 to 50 μm. At this scale, sub-grain domains previously dated using in-situ U-Th-Pb geochronology (e.g., ion-microprobe) can be...[Show more]

CollectionsANU Research Publications
Date published: 2007
Type: Journal article
URI: http://hdl.handle.net/1885/25044
Source: Chemical Geology
DOI: 10.1016/j.chemgeo.2007.07.020

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